Testing of indoor radon reduction techniques in central Ohio houses: Phase 2 (Winter 1988-1989). Final report, September 1988-May 1989

Technical Report · Tue May 01 04:00:00 EDT 1990

OSTI ID:6942948

Findlay, W O; Robertson, A; Scott, A G

The report gives results of tests of developmental indoor radon reduction techniques in nine slab-on-grade and four crawl-space houses near Dayton, Ohio. The slab-on-grade tests indicated that, when there is a good layer of aggregate under the slab, the sub-slab ventilation (SSV) mitigation technique, with only one or two suction pipes, can generally reduce indoor concentrations below 2 pCi/L (86 to 99% reduction). These reductions can be achieved even when: there are forced-air supply ducts under the slab; the slab is large (up to 2600 sq ft); and the foundation walls are hollow block. Operating the SSV system in suction always gave greater reductions than did operating in pressure. The crawl-space tests demonstrated that depressurizing under a plastic liner over the crawl-space floor was able to reduce living-area radon concentrations below 2 pCi/L (81 to 96% reduction). The performance of such sub-liner depressurization gave better reductions than did crawl-space ventilation (blowing air into, or out of, the crawl space). Completely covering the crawl-space floor with plastic sheeting was not always necessary to get adequate performance.

• Research Organization: Acres International Corp., Amherst, NY (USA)
• OSTI ID: 6942948
• Report Number(s): PB-90-222704/XAB
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
540130* -- Environment
Atmospheric-- Radioactive Materials Monitoring & Transport-- (1990-)
AIR POLLUTION
AIR POLLUTION CONTROL
BASEMENTS
BUILDINGS
CONTAMINATION
CONTROL
DOCUMENT TYPES
ECOLOGICAL CONCENTRATION
ELEMENTS
FEDERAL REGION V
FLUIDS
GASES
HOUSES
INDOOR AIR POLLUTION
MONITORING
NONMETALS
NORTH AMERICA
OHIO
POLLUTION
POLLUTION CONTROL
PROGRESS REPORT
RADIATION MONITORING
RADIOECOLOGICAL CONCENTRATION
RADON
RARE GASES
RESIDENTIAL BUILDINGS
USA
VENTILATION